In this article I will explain how to create a autocomplete textbox using C# in ASP.Net.
Design a Search box and reference the jquery and paste the javascript code in exampleSearch.aspx
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css" /> <script language="javascript" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script> <script language="javascript" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
<div>
Search: <asp:TextBox ID="txtSearch" runat="server"></asp:TextBox>
</div>
</asp:Content>
<script type="text/javascript"> $(document).ready(function () { $("#MainContent_txtSearch").autocomplete({ source: function (request, response) { var param = { keyword: $('#MainContent_txtSearch').val() }; $.ajax({ url: "Default.aspx/GetSearchResults", data: JSON.stringify(param), dataType: "json", type: "POST", contentType: "application/json; charset=utf-8", success: function (data) { response( $.map(data.d, function (item) { return { value: item } })) }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert(textStatus); } }); }, select: function (event, ui) { if (ui.item) { alert(ui.item.value); GetCustomerDetails(ui.item.value); } }, minLength: 2 }); }); } </script>
In exampleSearch.aspx.cs paste the webservice code and modiyfy SQL command as per your requirement. In webconfig change the connection String give datasource, user name and password of sql server.
[WebMethod]
public static string[] GetSearchResults(string keyword)
{
List<string> country = new List<string>();
string query = string.Format("SELECT DISTINCT Title FROM Post WHERE Title LIKE '%{0}%'", keyword);
using (SqlConnection con =
new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString))
{
using (SqlCommand cmd = new SqlCommand(query, con))
{
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
country.Add(reader.GetString(0));
}
}
}
return country.ToArray();
}
Output:
Search: how to
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